<template>
  <div class="permission-container">
    <div class="app-container">
      <!-- 表格 -->
      <el-card>
        <div style="text-align: right; margin-bottom: 20px">
          <el-button type="primary" size="small" @click="hAdd('0',1)">添加权限</el-button>
        </div>
        <el-table border :data="list" row-key="id">
          <el-table-column label="名称" prop="name" />
          <el-table-column label="标识" prop="code" />
          <el-table-column label="描述" prop="description" />
          <el-table-column label="操作">
            <template #default="{row}">
              <el-button v-if="row.type === 1" type="text" @click="hAdd(row.id,2)">添加</el-button>
              <el-button type="text" @click="hEdit(row)">编辑</el-button>
              <el-button type="text" @click="hDel(row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-card>
      <el-dialog :visible.sync="showDialog" :title="isEdit?'编辑权限':'添加权限'" @closed="resetForm">
        <!-- 表单内容 -->
        <el-form ref="formData" label-width="100px" :model="formData" :rules="rules">
          <el-form-item label="权限名称" prop="name">
            <el-input v-model="formData.name" />
          </el-form-item>
          <el-form-item label="权限标识" prop="code">
            <el-input v-model="formData.code" />
          </el-form-item>
          <el-form-item label="权限描述" prop="description">
            <el-input v-model="formData.description" />
          </el-form-item>
          <el-form-item label="权限启用">
            <el-switch
              v-model="formData.enVisible"
              active-text="启用"
              active-value="1"
              inactive-text="不启用"
              inactive-value="0"
            />
          </el-form-item>
        </el-form>

        <template #footer>
          <div style="text-align: right;">
            <el-button @click="showDialog = false">取消</el-button>
            <el-button type="primary" @click="hSubmit">确定</el-button>
          </div>
        </template>
      </el-dialog>
    </div>
  </div>
</template>

<script>
import { addPermission, delPermission, getPermissionList, updatePermission } from '@/api/permission'
import { tranListToTreeData } from '@/utils'

export default {
  name: 'Permission',
  data() {
    const validCode = (rule, value, callback) => {
      let codeList = this.originList.map(item => item.code)
      if (this.isEdit) {
        codeList = this.originList.filter(item => item.id !== this.formData.id).map(item => item.code)
      }
      if (codeList.includes(value)) {
        callback(new Error('权限标识已存在'))
      } else {
        callback()
      }
    }
    const validName = (rule, value, callback) => {
      let nameList = this.originList.filter(item => item.pid === this.formData.pid).map(item => item.name)
      if (this.isEdit) {
        nameList = this.originList.filter(item => item.pid === this.formData.pid && item.id !== this.formData.id).map(item => item.name)
      }
      if (nameList.includes(value)) {
        callback(new Error('权限名称已存在'))
      } else {
        callback()
      }
    }
    return {
      list: [],
      showDialog: false, // 是否显示弹层
      formData: {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      },
      rules: {
        name: [
          { required: true, message: '请输入权限名称', trigger: 'blur' },
          { validator: validName, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '请输入权限标识', trigger: 'blur' },
          { validator: validCode, trigger: 'blur' }
        ],
        description: [
          { required: true, message: '请输入权限描述', trigger: 'blur' }
        ]

      },
      isEdit: false,
      originList: []
    }
  },
  created() {
    this.loadPermissionList()
  },
  methods: {
    hAdd(pid, type) {
      this.isEdit = false
      this.formData.pid = pid
      this.formData.type = type
      this.showDialog = true
    },
    async  doAdd() {
      try {
        const res = await addPermission(this.formData)
        if (res.code !== 10000) return this.$message.error(res.message)
        this.$message.success(res.message)
        this.loadPermissionList()
        this.showDialog = false
      } catch (error) {
        console.log(error)
      }
    },
    hEdit(row) {
      this.isEdit = true
      this.formData = { ...row }
      this.showDialog = true
    },
    async doEdit() {
      try {
        const res = await updatePermission(this.formData)
        if (res.code !== 10000) return this.$message.error(res.message)
        this.$message.success(res.message)
        this.loadPermissionList()
        this.showDialog = false
      } catch (error) {
        console.log(error)
      }
    },
    hSubmit() {
      this.$refs.formData.validate((valid) => {
        if (!valid) return
        this.isEdit ? this.doEdit() : this.doAdd()
      })
    },
    hDel(id) {
      this.$confirm('确认删除该权限?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async() => {
        const res = await delPermission(id)
        if (res.code !== 10000) return this.$message.error(res.message)
        this.loadPermissionList()
        this.$message.success(res.message)
      }).catch((err) => {
        this.$message.error(err)
      })
    },
    async loadPermissionList() {
      const res = await getPermissionList()
      // console.log('从后端获取的数据的是', res)
      if (res.code !== 10000) return this.$message.error(res.message)
      this.$message.success(res.message)
      console.log(res.data)
      this.originList = res.data.map(item => {
        const { name, code, id, pid } = item
        return { name, code, id, pid }
      })
      console.log(this.originList)
      this.list = tranListToTreeData(res.data)
    },
    resetForm() {
      this.$refs.formData.resetFields()
      this.formData = {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: ''
      }
    }
  }
}
</script>
